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Section 5.4

Across
The voltage across a membrane. Ranges from -50 to -200 millivolts.
The combination of forces acting upon an ion.
A process in which two substances are simultaneously transported across a membrane by one protein.
Down
The main electrogenic pump of plants, fungi, and bacteria.
A transport protein that generates voltage across the membrane.
An example of active transport. Used to transport ions across the cell membrane.
Transport that requires energy.